The owner, a Lord, is moving from London to take care of his elderly mother and wanted to combine this process with giving to charity

He said: “My children and I will be sad to see it go. Being so close to all the amenities and tourist attractions and yet so peaceful in this beautiful square, it really is perfect.

“Like in any prize draw, the more tickets purchased by an individual, the higher the person’s chances of claiming the prize.

MOST READ IN NEWS

'KILLER COUPLE'

First picture of couple charged with murdering kids in 'arson attack'

mum pal stab rap

Pregnant mum-of-three, 29, 'stabbed to death at home by a friend'

FIXERS HIT FOR SIX

Sun investigation smashes bookies' plot to rig third Ashes Test

MOWED DOWN ON THE PAVEMENT

Lad 12, slams motorbike into schoolgirl, 15, putting her in coma

DEATH PLUNGE

Moment daredevil falls to death from the roof of a 62-storey skyscraper

NAIL HORROR

Mum gets blood poisoning and loses part of thumb after ripping off false nails

“I am hoping that one lucky winner can emerge as the proud owner of an apartment in London just in time for Christmas 2017.”

The competition website says: “We have been talking to many estate agents and decided that in an effort to sell our flat and at the same time help some of London’s homeless charities, it is in our best interest to take the sale of the property into our own hands.​”